One of the preventable causes of tinnitus is excessive noise exposure. In some instances of noise exposure, tinnitus can be noticed even before hearing loss develops, so it should be considered a warning sign and an indication of the need for hearing protection in noisy environments. Medications can also damage inner ear hair cells and cause tinnitus.
Derivative Liability Law and Legal Definition. Derivative liability refers to being held accountable for the acts of another, based upon assistance provided to that person. Anyone who intentionally participates in a crime as an aider, abettor, or co-conspirator may be held responsible for it. Derivative instruments.
DEFINITION of 'Derivative'. A derivative is a security with a price that is dependent upon or derived from one or more underlying assets. The derivative itself is a contract between two or more parties based upon the asset or assets. Its value is determined by fluctuations in the underlying asset. The most common underlying assets include stocks, bonds, commodities, currencies, interest rates and market indexes.